CN2168047Y - Lock against master key - Google Patents
Lock against master key Download PDFInfo
- Publication number
- CN2168047Y CN2168047Y CN 93208788 CN93208788U CN2168047Y CN 2168047 Y CN2168047 Y CN 2168047Y CN 93208788 CN93208788 CN 93208788 CN 93208788 U CN93208788 U CN 93208788U CN 2168047 Y CN2168047 Y CN 2168047Y
- Authority
- CN
- China
- Prior art keywords
- lock
- spring
- copper column
- hole
- cast iron
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Abstract
The utility model discloses a lock which prevents a master key. The inner side of each locking hole of the lock is respectively provided with a spring and three copper columns, a thin copper column which is shorter than the spring is arranged in a spring ring, the spring is arranged at one end of a cast iron hole, and the spring is contacted with a first copper column. A part of the first copper column is arranged in the cast iron hole, the other part of the first copper column is arranged in a rotary core hole, the first copper column is contacted with a second copper column and a part of the second copper column is arranged in the rotary core hole, and the other part of the second copper column is arranged in an extending rotary core. When the master key is inserted into a lock core, a part of the second copper column is squeezed into the cast iron hole of the lock, but the whole master key can not be squeezed and then is baffled by the second copper column, and the lock can not be opened. The structure of the lock only is a bit improved on the basic of a common lock, and the safety performance of the lock can be enhanced.
Description
The utility model relates to a kind of lock, lock that especially can preventing universal key.
Present lock all is to adorn a spring and two copper posts in a hole, in one lock several holes are arranged, when inserting in the lock with master key, two copper posts in the same hole have been pressed entirely, and with the edge that changes core level appears, change core like this and just can rotate, lock just can be opened, and present lock can not preventing universal key.
The purpose of this utility model provides a kind of lock of energy preventing universal key.
The purpose of this utility model is achieved in that the lockhole separated into two parts, a part is the cast iron hole, another part is for changeing the core hole, in each lockhole of lock a spring (1) and three copper posts are arranged, a thin copper post (2) that is shorter than spring is contained in the ring spring, spring (1) places cast iron hole one end, spring (1) the contact first bronze medal post (3), a first bronze medal post part is in the cast iron hole, a part is in changeing the core hole, the first bronze medal post (3) contact, the second bronze medal post (4), the second bronze medal post (a 4) part are in changeing the core hole, and another part stretches out to be changeed in the core.When the key of this lock inserts,, can the first bronze medal post total head in the cast iron hole, rotate the commentaries on classics core and unblank owing between the thin copper post in the first bronze medal post and the spring certain distance is arranged.
The utility model has the advantages that: as long as improve the safety that can improve lock greatly in common locking slightly.
Accompanying drawing is a kind of preventing universal key lock construction sectional view.
Below in conjunction with drawings and Examples the utility model is described.
The long 20mm in cast iron hole of lock, the long 15mm of spring (1), the long long 7mm of the thin copper post first bronze medal post (3) of one 12mm is arranged in the spring (1), the long 4mm of the second bronze medal post (4), when master key inserts lock core, can clamp-on a part in the lock cast iron hole to the second bronze medal post (4), but can not all clamp-on, so just stopped by the second bronze medal post (4), also just not opening, this has been locked.
Claims (1)
- A kind of lock of preventing universal key, spring and copper post are arranged in the lockhole, it is characterized in that having in the lockhole three copper posts, a thin copper post that is shorter than spring places in the ring spring, and spring (1) places cast iron hole one end, spring (1) the contact first bronze medal post (3), a first bronze medal post part is in the cast iron hole, and a part is in changeing the core hole, and the first bronze medal post (3) contacts the second bronze medal post (4), the second bronze medal post (a 4) part is in changeing the core hole, and another part stretches out to be changeed in the core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93208788 CN2168047Y (en) | 1993-04-07 | 1993-04-07 | Lock against master key |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93208788 CN2168047Y (en) | 1993-04-07 | 1993-04-07 | Lock against master key |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2168047Y true CN2168047Y (en) | 1994-06-08 |
Family
ID=33791160
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93208788 Expired - Fee Related CN2168047Y (en) | 1993-04-07 | 1993-04-07 | Lock against master key |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2168047Y (en) |
-
1993
- 1993-04-07 CN CN 93208788 patent/CN2168047Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |